Attaching spring hangers to the side bars of automobile frames



Sept. 20; 1927. ,64 3

B. T. ANDREN ATTACHING SPRING HANGERS-T0 THE SIDE BARS OF AUTOMOBILE FRAMES I Fild June 28, 1926 INVENTOR.

ATTORNEYS. I

TW E:

Patented Sept. 20, 1927.

UNITED STATES.

[PATENT OFFICE.

31m 'ronvnnn ANDREN, or: MILWAUKEE, isconsin, assrenon To A,.o. SMITH. oonronn'rroiv, or MILWAUKEE, WISCONSIN, A eonrona'rron'or new YORK.

ATTAGHI'NG- srnme. HANGERS 'ro THE srnE BARS or auroivionrnnrnnivrns.

Application filed June, 28, 1 926 Serial Ne. 119,912,

. The invention relates to an improved method of attachingspringv hangers to the side bars of an automobile frame, and to the, combination of a: spring hanger and side I in accordance with such head ofthe rivetso that the outer" surface f oftbe same will be flush or substantially flush with the plane of the outer surface of the side bar.

I-have found that by counter-sinking the rivet hole in the spring hanger and forcing the adjacent metal of the side bar'which is immediately under the head of the rivet into the said hole, that the thickness of the metal of the side bar is preserved and the very w desirable results flowing from the use of counter-sunk rivets can be attained by a simple procedure. v o

By thus deflecting the metal of the side bar into thecounter sunk hole in the spring hanger, a substantial conical embossment is formed upon the side bar, which when entered into the counter-sunk hole, servesv to interlock the assembled parts in position and insure a much more reliable joint between them.

In carrying out by invention, I form a rivet with a Substantially flat head, but underneath the head the rivet is provided with a tapering or conical section merging into the shank of the rivet. The spring hanger and the side bar are provided with aligned perforations in which the shank of the rivet is inserted, and when pressure is exerted upon the head of the rivet, the tapering section thereon bears upon and deflects the metal of the side bar, and forces it into the counter-sunk hole in the spring hanger. In such operation, the flat head of the rivet is brought into what is approximately the plane of the outer surface of the side bar, so as to lie substantially flush therewith, and present no perceptible projection. The point of the rivet is upset to complete the riveting operation.

The structural features of my invention will now .be described, and the novelty thereof pointed out in theappended claims. .In the accompanying drawing:

'F igure 1 is a view in elevation from the inside of the forward end of a side bar of anautomobile frame and a spring hanger associated therewith, the view being broken out, in longitudinalvertical section in the plane of the rivet to show the construction Q-jf the parts, with a rivet sh entering the aligned rivet holes. t

, Fig. 2 is a like view of the construction showing the position ofthe parts at the conclu'si on' of the riveting op'eration In thedrawing, thenumeral 10 indicates a spring hanger, it may be of ordinary construction, having a shank 11 which is en-' tered into the channelled endofa side bar 12, a shoulder 13 upon the spring hanger abutting the squared end 14 of the sidebar. The spring hanger, is bored'in a vertical direction to provide a perforation 15 for the king rivet 16, suchperforation being counter-sunk atonelend as at17, for the purposes of my invention. The king rivet 16 has a straight shank 18 and a substantially flat head 19, connected byoa conical or tapering portionQO. The opposite flanges of the side bar are provided with rivet receiving perforations 21 and 22, the perforations 15, 21 and. 22 being aligned when the parts are assembled with the end 14 of the side bar abutting the shoulder 13 upon. the spring hanger 10f other rivets. "or -wh ich one indicated 23 is shown, may be passed laterally through the web of theside bar and shank of the iiri eh ne I With the springhanger andside bar assembled as shown in Fig. 1, and the rivet 16 in the aligned perforations, pressure applied to the head of the rivet 16 will force the tapering portion 20 of the rivet against the unsupported surrounding metal of the side bar lyingimmediately above the counter-sunk hole 17, and deflect the same from the position shown in Fig. 1 to that shown in Fig. 2. Such action produces upon the inner side of the side bar a circular embossment 24:, which is thus made to enter the counter-sunk hole 17 in the spring hanger.

At the same time, the tapering portion 20 of the rivet fills the hollow opening in the embossment as the latter is being formed, and when the point of the rivet is spread to form the head 25, the circular embossment 24 on the side bar is held immovably in the counter-sunk hole 17 in the spring hanger, and the parts areunited into a permanent structure, with the head of the rivet flush or substantially flush with the outer surfaceof the side bar. i

While I have illustrated the invention as applicable to the king rivet, it is obvious that the same procedure may be used inconnection with the transverse rivets. Inwhatever location used, the objectionable outward projectionof the rivet heads is obviated, and a smooth and regular contour is produced upon the outer surfaces of the connected side bar and the spring hanger, and a substantial interlocking of the elements of the combination attained at the same time, which latter feature, adds greatly to the ability of the structure to resist the strains imposed thereon.-

g 'Having thus described my invention, what I claim and desire to secure by Letters Patent of the United States, is:

a y 1. Themethod of attaching spring hangers to the side bars, of an automobile frame,

which comprises the stepsof providing a spring hangerwith a perforation flaring at its end, providing a sidebar with registering perforatlons, assembling the spring hanger and the side bar, with the perforations aligned, inserting in the aligned perforations atrlvet havlng a tapering portlonbetween its head and shank, and applying pressureto the head of the rivet to depress the adjacent flare ofthe perforation in the spring hanger to interlock the parts, and upsetting the point of. the rivet to complete the riveting:

operation. 7

2. The method of attaching spring'hangers to the sideb-arsof an automobile frame,

which comprises the steps of providing a spring hanger wlth aperforation flaring at its end,prov1d1ng a slde bar with registermg perforations, assembling the spring hanger and the side bar with the perforations aligned, forininga rivet with a substantially fiat head and a tapering portion between its head and shank, inserting the said rivetiu c, the aligned perforations, applying pressure to the headof the rivet to force the adjacent surrounding metaltofsthe. side bar into the the said parts being provided with-aligned perforations for the reception of a rivet, the

perforation in thespring hangerbeingflared atone end with a'conical embossment on the :bar enteredinto the flare of the perforation in the spring hanger to interlock the-parts, and arivet having a taper'ed portion under its head passed through-the perforations witlrsuch tapered "portion restingin the hollow o'fthe embossmentjthe point of the rivetibeing spread to connect the parts into a permanent structures? 1:

t. In an automobile frame, a side bar and a spring hanger attached to the end thereof,

the said parts ibeing'p'rovided with aligned perforations for. the reception of a rivet,the perforationin the spring hanger being flared at one end'with a conical embossmient on the bar entered into the-flare of the perforation V in the spring hangerto interlock the parts, surrounding portion of the side bar into the and a flush rivethaving a tapered portion under its head passed through the perform tions'with such tapered portion resting in structure) i y l i i r In testimony whereofyl have signed-my name at Milwaukeathis 11th day of'June,

' 528. T. AN REN.

the hollow ofthe embossment and its flush I end lying in theplane'; of theouter surface '85 of the side bar, the point of the rivet being i 

